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arXiv · 2512.22059

Signature for charged Higgs pair production in 2HDM+a model at CLIC

Shuo Yang·Ziyang Yu·Yiqi Wang·Lei Wang
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Abstract

In this work, we study the search for charged Higgs bosons in the Two-Higgs-Doublet Model plus an additional pseudo-scalar (2HDM+a) at the Compact Linear Collider (CLIC). Focusing on the pair production of charged Higgs bosons, followed by the decays $H^\pm \to a W $ and $ H^\mp \to t b $, we analyze the signal channel of $4j+2b+E_T^{miss}$. Given the center-of-mass energy of CLIC as $ \sqrt{s} = 1500$ GeV, charged Higgs bosons with masses $ m_{H^\pm} < \sqrt{s}/2$ are explored. Simulation results indicate that the signal significance of 400 GeV and 600 GeV charged Higgs bosons can reach $5\sigma$ in specific parameter spaces, and the $2\sigma$ exclusion limits in the $m_{H^\pm}- m_a$ plane are presented for $m_{H^\pm}$ in the range of [400, 650] GeV.

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Shuo Yang, Ziyang Yu, Yiqi Wang, Lei Wang. 2025-12-26. Signature for charged Higgs pair production in 2HDM+a model at CLIC. https://arxiv.org/abs/2512.22059

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